Specifically,
Hydrology plays a basic role from the planning stage of new hydropower schemes,
up to complete feasibility studies of the projects, even after the construction
stage for improving the operation of Hydel power schemes. The hydrological
series that represents variations in river flow throughout the year is utilized
to estimate the power and energy production from the available stream flow. Installing
gauging stations, collecting data, performing analysis of available water
resources and design floods these are important tasks of Hydrology Section.
This leads to an increasing need for real-time data acquisition system and flow
forecasting methods.

The responsibility
of the hydrology section is to present the hydrologic data in a systematic
manner. For this purpose the hydrology section has installed 35 gauging
stations in all the seven regions of KPK to collect the required data which
include gauge heights, discharge measurements and suspended sediment. The data
analysis is performed to determine the availability of water resources in
different time scales and to provide stations statistics, mean daily discharge,
with a monthly and the annual summary. The summary includes mean discharge, Specific
discharge, runoff and volume of water. The annual summary also includes daily
minimum and daily maximum for that particular year. Hydrology data is essential
to determine the following:

·Hydel power potential of different streams.

·Design different components of a Hydel
power project.

·Design discharge of a Hydel power project.

·Intensity of high floods for the safety of
various structures of the Hydel power projects such as dam, intake structure,
power channel, silt cleaning basins and power house.

·Volume and size of reservoir.

·Dry, wet and medium years of the Catchment
area of the project.

·Annual energy and plant factor of the
scheme and selection of the Hydel power schemes, which are optimally
economical.

Projects
Area:

The projects are restricted to the
following seven regions of northern areas of KPK.

·Upper Chitral

·Lower Chitral

·Dir Valleys

·Swat Valleys

·Indus Kohistan

·Kaghan valley and

·Mansehra west

The
main objective of the hydrology section is summarized as under:

·To install gauging net works on ungauged
tributaries of the river Catchment in the above mentioned regions.

·To operate and maintain the stations to
ensure the quality of data.

·To visit all stations for collection of
data and flow measurement on monthly basis.

·To enter the field data in PC compatible
format after manual corrections.